scholarly journals Polymorphisms in the ghrelin gene and their associations with milk yield and quality in water buffaloes

2013 ◽  
Vol 96 (5) ◽  
pp. 3326-3331 ◽  
Author(s):  
F.M.M. Gil ◽  
G.M.F. de Camargo ◽  
F.R. Pablos de Souza ◽  
D.F. Cardoso ◽  
P.D.S. Fonseca ◽  
...  
Keyword(s):  
Milk Yield ◽  
Water Buffaloes ◽  
Yield And Quality ◽  
Ghrelin Gene

scholarly journals Consequences of walking or transport by truck on milk yield and quality, as well as blood metabolites, in Holstein, Montbéliarde, and Valdostana dairy cows

2020 ◽  
Vol 103 (4) ◽  
pp. 3470-3478 ◽  
Author(s):  
M. Koczura ◽  
M. Bouchon ◽  
G. Turille ◽  
M. De Marchi ◽  
M. Kreuzer ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Blood Metabolites ◽  
Yield And Quality

scholarly journals Milk yield and quality of Original Brown cattle reared in Italian alpine region

2020 ◽  
Vol 19 (1) ◽  
pp. 1157-1169 ◽  
Author(s):  
Thomas Zanon ◽  
Angela Costa ◽  
Massimo De Marchi ◽  
Mauro Penasa ◽  
Sven Koenig ◽  
...  
Keyword(s):  
Milk Yield ◽  
Alpine Region ◽  
Yield And Quality ◽  
Brown Cattle

Milk yield at first lactation, parity, and season of calving affect the reproductive performance of water buffalo cows

2020 ◽  
Vol 60 (8) ◽  
pp. 1073
Author(s):  
Héctor Nava-Trujillo ◽  
Robert Valeris-Chacin ◽  
Armando Quintero-Moreno ◽  
Juan Escalona-Muñoz
Keyword(s):  
Milk Yield ◽  
Reproductive Performance ◽  
Water Buffalo ◽  
Negative Energy ◽  
Calving Interval ◽  
Water Buffaloes ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Context Profitability of water buffalo systems depends on a calving interval (CI) <400 days. Several factors affect the achievement of this target. However, milk yield at first lactation has received little attention. Aims Determine the effect of milk yield at first lactation, parity, season of calving and farm, on the length of CI and the probability of a CI ≤ 400 days in water buffaloes. Methods A retrospective analysis of milk yield at first lactation and reproductive records of 1459 water buffaloes was carried out. Milk yield was categorised as Group 1 (≤1090 kg), Group 2 (1090–1377 kg), Group 3 (1377–1684 kg) and Group 4 (>1684 kg); parity was categorised as parity 1, 2 and ≥ 3; and month of calving was grouped into three seasons: December–March, April–July, and August–November. Data were analysed using linear and logistic mixed models. Key results CI increased from 425.3 days (95% CI: 418.8–431.8 days) in group 1 to 463.3 days (95% CI: 456–470.6 days) in group 4 (P < 0.05), while the probability of having a CI ≤ 400 days decreased from 0.5 (95% CI: 0.46–0.54) to 0.26 (95% CI: 0.22–0.29), respectively (P < 0.05). CI decreased from 466 days (95% CI: 460.8–471.3 days) in parity 1 to 410.5 days (95% CI: 405.2–415.8 days) in parity ≥3, whereas the probability of a CI ≤ 400 days increased from 0.26 (95% CI: 0.24–0.29) to 0.51 (95% CI: 0.47–0.54) respectively (P < 0.05). Water buffaloes calving in August–November showed significantly shorter CI and, along with those calving between December–March, showed the highest probability of a CI ≤ 400 days. An interaction between milk yield at first lactation and parity on both outcomes was observed. Conclusions Shorter CI and higher probability of a CI <400 days were associated with lower milk yields at first lactation, higher parity and calving between August–November. Higher milk yield at first lactation affected negatively the reproductive performance of water buffaloes, especially at parity 1 and 2. Implications These results highlight the importance of adequate nutritional management to allow water buffaloes to cope with the challenge of the postpartum negative energy balance and have a calving interval less than 400 days.

scholarly journals Genetic Parameters of Milk Coagulation Properties and Their Relationships with Milk Yield and Quality Traits in Italian Holstein Cows

2008 ◽  
Vol 91 (1) ◽  
pp. 371-376 ◽  
Author(s):  
M. Cassandro ◽  
A. Comin ◽  
M. Ojala ◽  
R. Dal Zotto ◽  
M. De Marchi ◽  
...  
Keyword(s):  
Milk Yield ◽  
Genetic Parameters ◽  
Holstein Cows ◽  
Quality Traits ◽  
Yield And Quality ◽  
Milk Coagulation

Effect of milking interval on milk yield and quality and rate of recovery during subsequent frequent milking

2008 ◽  
Vol 114 (2-3) ◽  
pp. 176-180 ◽  
Author(s):  
Kerst Stelwagen ◽  
Vicki C. Farr ◽  
Gina D. Nicholas ◽  
Stephen R. Davis ◽  
Colin G. Prosser
Keyword(s):  
Milk Yield ◽  
Yield And Quality ◽  
Rate Of Recovery

scholarly journals Changes in Milk Yield and Quality During Lactation in Polish Red and White-Backed Cows Included in the Genetic Resources Conservation Programme in Comparison with the Simmental Breed

2016 ◽  
Vol 16 (3) ◽  
pp. 871-886 ◽  
Author(s):  
Zygmunt Litwińczuk ◽  
Joanna Barłowska ◽  
Alicja Matwijczuk ◽  
Jan Słomiany
Keyword(s):  
Phase I ◽  
Genetic Resources ◽  
Milk Yield ◽  
Dry Matter ◽  
Reference Group ◽  
Low Input ◽  
Milk Samples ◽  
Fat Globules ◽  
Yield And Quality ◽  
Resources Conservation

AbstractMilk yield and quality was assessed in cows raised on low-input farms (traditional feeding), i.e. two breeds covered by genetic resources conservation (RP and BG) and the SM breed. The reference group was PHF HO cows from an intensive milk production system (PMR feeding). A total of 1,212 milk samples were collected from three periods of lactation: I (up to 120 days), II (121–200) and II (over 200). The milk was analysed for content of fat, protein, casein, lactose, dry matter, non-fat dry matter and the protein-to-fat ratio, coagulation time, heat stability and the percentage of fat globules in different size ranges. Fatty acid profile and cholesterol content were determined in a representative number of 180 milk samples. Daily yield in the native breeds in the third phase of lactation was 9.6 and 8.7 kg, which was slightly over 55% of their yield in phase I, compared to 66% in the SM and 73.4% in the reference group (PHF HO). The increase in fat and protein (including casein) in the milk during lactation was much higher in the native breeds, so its energy value in phase II of lactation was 11% higher in the BG cows and 9% higher in RP, but only 4% higher in the SM with regard to phase I of lactation. The milk fat from the Polish Red cows had the highest proportion of PUFA in each phase of lactation, including CLA, and the highest PUFA/SFA ratio. Over the course of lactation the percentage of large fat globules in the milk decreased, particularly in the native breeds (P≤0.01), while in the SM the differences were much smaller and statistically insignificant. Lactation persistency in both native breeds raised in a low-input system was worse than in the SM, but the increase in basic components during lactation was markedly higher, while that of cholesterol was lower.

Effect of dietary extruded linseed, verbascoside and vitamin E supplements on yield and quality of milk in Lacaune ewes

2014 ◽  
Vol 81 (4) ◽  
pp. 485-493 ◽  
Author(s):  
Donato Casamassima ◽  
Maria Nardoia ◽  
Marisa Palazzo ◽  
Francesco Vizzarri ◽  
Angela Gabriella D‘Alessandro ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Vitamin E ◽  
Milk Yield ◽  
Milk Fat ◽  
Body Condition Score ◽  
Post Partum ◽  
Control Group ◽  
Tbars Level ◽  
Homogeneous Groups ◽  
Yield And Quality

Milk yield and milk qualitative parameters were evaluated in Lacaune ewes on a diet supplemented with extruded linseed, verbascoside and vitamin E. A 98 d-trial was conducted on 44 ewes and started 40±2 d post partum. The animals were divided into four homogeneous groups of eleven animals each; one control group (CON) without extruded linseed and dietary supplements, and the diet of the other three experimental groups was enhanced with extruded linseed (L group), extruded linseed-verbascoside (LVB group), and extruded linseed-verbascoside-vitamin E (LVBE group). All animals individually received an isoenergetic diet, consisting of 700 g concentrated feed and meadow hay ad libitum. Body weight, body condition score, milk yield and milk qualitative parameters were assessed. LVB and LVBE groups resulted in a significant improvement (P<0·05) in milk yield due to the verbascoside supplementation. The extruded linseed supplementation L, LVB and LVBE groups produced a milk fat increase and a better milk fatty acid profile in terms of a higher monounsaturated fatty acid (MUFA), polyunsaturated fatty acid (PUFA) and conjugated linoleic acid (CLA) content and a reduced saturated fatty acid (SFA) content, a lower n-6/n-3 ratio and atherogenic and thrombogenic index. The dietary verbascoside supplementation in the LVB and LVBE group resulted in a better milk quality due to the low cholesterol level and higher vitamin A and E contents, in addition to an increased oxidative stability highlighted by the lower thiobarbituric acid reactive substances (TBARS) level. Thus, the addition of extruded linseed and verbascoside supplements improved milk yield and quality both from a chemical and nutritive point of view.

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