Evaluation of animal models to explore the influence of maternal genetic and maternal permanent environment effect on reproductive performance of Jersey crossbred cattle

2021 ◽  
Author(s):  
Anshuman Kumar ◽  
Ajoy Mandal
Keyword(s):  
Animal Models ◽  
Reproductive Performance ◽  
Crossbred Cattle ◽  
Environment Effect

scholarly journals Growth and reproductive traits of friesian X sanga crossbred cattle in the Accra plains of Ghana

2013 ◽  
Vol 13 (57) ◽  
pp. 7357-7371
Author(s):  
FY Obese ◽  
◽  
DA Acheampong ◽  
KA Darfour-Oduro ◽  
Keyword(s):  
Birth Weight ◽  
Reproductive Performance ◽  
Production System ◽  
Reproductive Traits ◽  
Calving Interval ◽  
Limited Information ◽  
Crossbred Cattle ◽  
Age At First Calving ◽  
Inadequate Nutrition ◽  
Accra Plains

The typical cattle production system in Ghana is predominantly pasture-based. Cattle are grazed all year round on natural pastures with minimal feed supplementation. The animals kept in this production system often experience inadequate nutrition and fluctuating nutrient supply affecting their productivity. There is presently limited information on the growth and reproductive performance of the Friesian x Sanga crossbred cattle (Plate 1) and factors influencing these performance traits. The growth and reproductive performance records of 150 Friesian x Sanga crossbred cattle, kept at the Animal Research Institute station in the Accra Plains of Ghana from April 1993 to October 2009 were evaluated to determine the effect of parity of cow, season of calving and sex of calf on birth weight, weaning weight, growth rate, age at first calving and calving interval. The birth weight and weaning weights of the calves averaged 21.8 ± 0.5 kg and 94.2 ± 3.8 kg, respectively, and were not (P > 0.05) affected by sex of calf, parity of cow or season of calving. Parity of cow affected (P < 0.05) weight of calf at 12 months. Calf weight at 12 and 18 months averaged 128.0 ± 3.4 kg and 159.9 ± 4.5 kg, respectively. Pre-weaning and post-weaning average daily gains were 0.33 ± 0.02 kg/day and 0.23 ± 0.03 kg/day, respectively, and were not significantly (P > 0.05) affected by sex of calf, parity of cow or season of calving. The mean age at first calving was 41.2 ± 1.2 months. Calving interval was prolonged averaging 441.6 ± 10.3 days and was significantly (P < 0.05) affected by parity of cow. Calving interval decreased with increasing parity of cow. The age at first calving and calving interval were not (P > 0.05) affected by either sex of calf or season of calving. The growth and reproductive performance of the Friesian x Sanga crossbred cattle was less than optimum. Improving their nutrition could impact, positively, on their productivity through fast growth, increased milk yield and early resumption of ovarian cycles after calving. Thus, results from this study should guide the development of appropriate strategies for increased meat and milk production in Friesian x Sanga crossbred cattle.

scholarly journals ĐA HÌNH GEN NCAPG VÀ RNF212 LIÊN QUAN ĐẾN CÁC TÍNH TRẠNG KINH TẾ Ở BÒ LAI SIND VÀ LAI BRAHMAN NUÔI TẠI MIỀN TRUNG VIỆT NAM

2021 ◽  
Vol 5 (1) ◽  
pp. 2352-2358
Author(s):  
Lê Nữ Anh Thư ◽  
Nguyễn Bá Trung ◽  
Dương Thị Hương ◽  
Võ Thị Minh Tâm ◽  
Dương Thanh Hải ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Reproductive Performance ◽  
Meiotic Recombination ◽  
Recombination Rate ◽  
Developed Countries ◽  
Meat Production ◽  
Viet Nam ◽  
Crossbred Cattle ◽  
Favorable Alleles ◽  
Pcr Rflp

Sinh sản và sản xuất thịt là những tính trạng kinh tế quan trọng trong sản xuất chăn nuôi. Để cải thiện di truyền những tính trạng này, chỉ thị phân tử đã được ứng dụng rộng rãi ở nhiều nước có hệ thống chăn nuôi phát triển. Những nghiên cứu gần đây cho rằng gen RNF212 và NCAPG liên quan đến khả năng sinh sản và sức sản xuất thịt ở động vật có vú. Trong đó, đột biến thay thế nucleotide đơn C>T trên gen RNF212 được biết làm gia tăng tỷ lệ tái tổ hợp giảm phân ở bò. Hơn nữa, tỷ lệ tái tổ hợp giảm phân tương quan thuận với hiệu quả sinh sản nên đột biến này có thể là chỉ thị quan trọng liên quan đến khả năng sinh sản cao ở bò. Bên cạnh đó, đột biến thay thế nucleotide đơn A>G trên gen NCAPG được biết làm gia tăng khối lượng thịt xẻ ở bò. Do đó, trong nghiên cứu hiện tại, chúng tôi đã tiến hành phân tích đa hình gen RNF212 P259S và NCAPG I442M trên 2 tổ hợp bò lai bằng phương pháp PCR-RFLP. Kết quả phân tích chỉ ra rằng RNF212 P259S và NCAPG I442M là đa hình trong quần thể bò lai Sind và lai Brahman ở Việt Nam. Sự xuất hiện tần suất thấp của alen T (RNF212) và tần suất cao của alen G (NCAPG) có ý nghĩa quan trọng cho công tác chọn và lai tạo giống bò có khả năng sinh sản và năng suất thịt cao.  ABSTRACT Reproduction and meat production are considered as the most economically important traits in livestock production. In developed countries, the molecular markers have been commonly used in the animal breeding program  to find the favorable alleles in genes associated with economically important traits. The recent studies showed that RNF212 and NCAPG genes are involved in fertility and meat production in mammals, respectively. In which, T allele of RNF212 P259S gene was reported to significantly associate with a higher recombination rate in cow s. Of note, since the meiotic recombination rate correlates positively with the reproductive success of human females, the RNF212 P259S is expected to be a useful marker for increasing the reproductive performance in cattle. In addition, G allele of NCAPG I442M increased the carcass weight of cattle. Therefore, in this study, we conducted the polymorphisms of RNF212 P259S and NCAPG I442M by using PCR-RFLP in 2 crossbred cattle. The results showed that the RNF212 P259S and NCAPG I442M were polymorphic in Red Sindhi and Brahman crossbred cattle. The presence of T allele of RNF212 P259S and G allele of NCAPG I442M are informative for the future breeding of Vietnamese crossbred cattle.      

Effect of restricted suckling once daily in Bos taunts x Bos indicus dairy cattle on milk production and reproduction

1995 ◽  
Vol 1995 ◽  
pp. 27-27
Author(s):  
J. K. Margerison ◽  
T. R. Preston ◽  
C. J. C. Phillips
Keyword(s):  
Milk Production ◽  
Reproductive Performance ◽  
Post Partum ◽  
Bos Indicus ◽  
Calving Interval ◽  
Crossbred Cattle ◽  
Once Daily ◽  
Total Milk ◽  
Condition Score ◽  
Parity Condition

Restricted suckling is one of the most common forms of livestock production in developing countries. It combines partial milk extraction and suckling, in a multi-commodity (milk and calf) production system.The objective of this experiment was to determine the possibility of the use of once daily suckling to increase total milk production without reducing reproductive performance or the ‘ quantity’ of milk extracted at milking in crossbred cattle.A total of 36 cows, locally known as ‘Lucerna’, were placed into two treatments. 18 cows were non-suckled and 18 cows were restricted suckled once daily for 15 minutes following milking (p.m.). All experimental cows had completed two or more lactations and at 3 days post partum were simultaneously allocated to the treatments according to: parity; condition score; previous lactation yield and calving interval. The cows remained in the experiment for 100 days.

scholarly journals Genetics of Lifetime Reproductive Performance in Italian Heavy Draught Horse Mares

Animals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1085
Author(s):  
Roberto Mantovani ◽  
Fabio Folla ◽  
Giuseppe Pigozzi ◽  
Shogo Tsuruta ◽  
Cristina Sartori
Keyword(s):  
Genetic Variation ◽  
Animal Models ◽  
Reproductive Performance ◽  
Training Dataset ◽  
Horse Breed ◽  
Fitness Trait ◽  
Arcsine Transformation ◽  
Estimate Heritability ◽  
Breeding Seasons ◽  
Do So

Our aims were to find a phenotypic variable to express mares’ lifetime reproductive performance after 6 breeding seasons (BS) in Italian Heavy Draught Horse breed (IHDH), and to estimate its heritability. At first, 1487 mares in a training dataset were used to implement and validate a set of predictive coefficients (LFR-C) or equations (LFR-E) to estimate a lifetime foaling rate (LFR) after 6 BS, i.e., the number of foals generated divided by the opportunities to do so. Then, 3033 mares in a dataset with at least 3 registered BS, was used to estimate LFR for mares with 3, 4, or 5 registered RS. This dataset contained actual (n = 1950) and estimated (n = 1443) LFR, obtained by LFR-C, and LFR-E; Arcsine transformation of LFR-C and LFR-E were also analyzed in single trait animal models to estimate heritability. Overall, the LFR showed a moderate but significant genetic variation, and the heritability of the trait was high (0.24) considering it is a fitness trait. The arcsine transformation of LFR did not show any improvement of heritability. The present study indicates the possible use of a linear LFR variable for breeding purposes in IHDH breed considering both complete and incomplete reproductive careers.

Bayesian estimates of genetic relationship between calving difficulty and productive and reproductive performance in Holstein cows

2018 ◽  
Vol 58 (5) ◽  
pp. 785 ◽  
Author(s):  
Navid Ghavi Hossein-Zadeh ◽  
Mohammad Hossein Salimi ◽  
Abdol Ahad Shadparvar
Keyword(s):  
Animal Models ◽  
Reproductive Performance ◽  
Genetic Effect ◽  
Reproductive Traits ◽  
Calving Interval ◽  
Posterior Mean ◽  
Days Open ◽  
Fat Yield ◽  
Direct Genetic Effect ◽  
Calving Difficulty

The objective of present study was to estimate genetic correlations between calving difficulty and productive and reproductive traits in Iranian Holsteins. Calving records from the Animal Breeding Center of Iran, collected from 1991 to 2011 and comprising 183 203 first-calving events of Holstein cows from 1470 herds were included in the dataset. Threshold animal models included direct genetic effect (Model 1) or direct and maternal genetic effects with covariance between them (Model 2) were fitted for the genetic analysis of calving difficulty. Also, linear animal models including direct genetic effect were fitted for the genetic analysis of productive and reproductive performance traits. A set of linear-threshold bivariate models was used for obtaining genetic correlation between calving difficulty and other traits. All analyses were implemented by Bayesian approach via Gibbs sampling methodology. A single Gibbs sampling chain with 300 000 rounds was generated by the TM program. Posterior mean estimates of direct heritabilities for calving difficulty were 0.056 and 0.066, obtained from different models. Also, posterior mean estimate of maternal heritability for this trait was 0.018. Estimate of correlation between direct and maternal genetic effects for calving difficulty was negative (–0.44). Posterior mean estimates of direct heritabilities for milk yield, fat yield, protein yield, days from calving to first service, days open and first calving interval were 0.257, 0.188, 0.235, 0.034, 0.042 and 0.050 respectively. The posterior means of direct genetic correlation between calving difficulty and milk yield, fat yield, protein yield, days from calving to first service, days open and first calving interval were low and equal to –0.135, 0.030, –0.067, –0.010, –0.075 and –0.074 respectively. The results of the current study indicated that exploitable genetic variation in calving difficulty, productive and reproductive traits could be applied in designing future genetic selection plans for Iranian Holsteins.

Sign in / Sign up

Export Citation Format

Share Document