scholarly journals Effects of dietary forage-to-concentrate ratio on nutrient digestibility and enteric methane production in growing goats (Capra hircus hircus) and Sika deer (Cervus nippon hortulorum)

2017 ◽  
Vol 30 (7) ◽  
pp. 967-972 ◽  
Author(s):  
Youngjun Na ◽  
Dong Hua Li ◽  
Sang Rak Lee
Keyword(s):  
Methane Production ◽  
Sika Deer ◽  
Cervus Nippon ◽  
Nutrient Digestibility ◽  
Capra Hircus ◽  
Enteric Methane ◽  
Growing Goats

Effects of dietary manganese supplementation on nutrient digestibility and production performance in male sika deer (Cervus Nippon)

2016 ◽  
Vol 88 (3) ◽  
pp. 463-467 ◽  
Author(s):  
Kun Bao ◽  
Kaiying Wang ◽  
Xiaoxu Wang ◽  
Tietao Zhang ◽  
Hanlu Liu ◽  
...  
Keyword(s):  
Sika Deer ◽  
Cervus Nippon ◽  
Nutrient Digestibility ◽  
Production Performance

scholarly journals Effects of bismuth subsalicylate and encapsulated calcium-ammonium nitrate on enteric methane production, nutrient digestibility, and liver mineral concentration of beef cattle

2020 ◽  
Vol 98 (8) ◽  
Author(s):  
Darren D Henry ◽  
Francine M Ciriaco ◽  
Rafael C Araujo ◽  
Pedro L P Fontes ◽  
Nicola Oosthuizen ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Ammonium Nitrate ◽  
Methane Production ◽  
Nutrient Digestibility ◽  
Negative Effects ◽  
Mineral Concentration ◽  
Nonprotein Nitrogen ◽  
Calcium Ammonium Nitrate ◽  
Bismuth Subsalicylate ◽  
Enteric Methane

Abstract Two randomized block designs were performed to evaluate the effects of bismuth subsalicylate (BSS) and encapsulated calcium-ammonium nitrate (eCAN) on enteric methane production, nutrient digestibility, liver mineral concentration, and performance of beef cattle consuming bahiagrass hay (Paspalum notatum; ad libitum) and sugar cane molasses [1.07 kg/d; dry matter basis]. Experiment 1, used 25 crossbred steers [335 ± 46 kg of initial body weight (BW)] with a 2 × 2 + 1 factorial arrangement of treatments for two 20 d periods. Factors were nonprotein nitrogen (NPN) source (350 mg/kg BW of nitrate or 182 mg/kg BW of urea), BSS (0 or 58.4 mg/kg BW), and a negative control (NCTRL; bahiagrass hay and molasses only). Steers were re-randomized for a second period (n = 10/treatment total). Intake, apparent total tract digestibility and enteric methane were evaluated. Experiment 2 used 75 crossbred heifers in 25 pens (3 heifers/pen; 279 ± 57 kg of initial BW), consuming the same diet and treatments as experiment 1, to determine liver mineral concentration and growth performance over 56 d. Orthogonal contrasts were used to evaluate the effects of NPN (NCTRL vs. others), source of NPN (NS; urea vs. eCAN), BSS, and NS × BSS. For experiment 1, no interactions were observed for any variables, nor were there any effects of NPN on total tract digestibility of nutrients, except for crude protein. Digestibility of all nutrients was reduced (P ≤ 0.021) for steers consuming eCAN compared with urea. There was no effect (P > 0.155) of BSS on digestibility of nutrients; however, BSS reduced (P = 0.003) apparent S retention. Enteric CH4 emission (g/kg BW0.75) was decreased (P = 0.051) by 11% with the addition of eCAN compared with urea. For experiment 2, no NS × BSS interactions (P ≥ 0.251) were observed to affect liver mineral concentration; however, the addition of BSS decreased liver concentration of Cu (P = 0.002) while increasing Fe concentration (P = 0.016). There was an NS × BSS interaction (P = 0.048) where heifers consuming eCAN and BSS had lesser final BW compared with heifers consuming urea and BSS. While eCAN may be a viable resource for mitigating enteric CH4 production of forage-fed cattle, the negative effects on digestibility should be considered. Furthermore, BSS, at the amount provided, appears to have no negative effects on digestibility of nutrients in forage-fed cattle; however, there may be deleterious impacts on performance depending upon what nitrogen source is supplied.

Effects of dietary zinc supplementation on nutrient digestibility, haematological biochemical parameters and production performance in male sika deer (Cervus nippon)

2016 ◽  
Vol 56 (6) ◽  
pp. 997 ◽  
Author(s):  
Bao Kun ◽  
Sun Weili ◽  
Li Chunyi ◽  
Wang Kaiying ◽  
Li Zhipeng ◽  
...  
Keyword(s):  
Biochemical Parameters ◽  
Sika Deer ◽  
Control Diet ◽  
Average Daily Gain ◽  
Cervus Nippon ◽  
Nutrient Digestibility ◽  
Production Performance ◽  
Control Group ◽  
Dietary Zinc ◽  
Group A

The purpose of the present study was to investigate the effects of dietary zinc (Zn) supplementation on antler growth, haematological biochemical parameters and nutrient digestibility in farmed male sika deer. Twenty-five 2-year-old growing male sika deer were randomly divided into five Groups (A, B, C, D and E; 5/group). Animals in Groups A, B, C, Dand E received 0, 5, 15, 40, 100 mg Zn/kg, respectively. Group A, without supplementation acted as a control. The treatment diets were the same basal diet supplemented with 5, 15, 40 and 100 mg Zn/kg (provided as Zn methionine), respectively. The results showed that the digestibility of dry matter (DM) and crude protein in Groups D and E were greater than that in Groups A, B and C (P < 0.05). Digestibility of neutral detergent fibre in Group E was higher than in the control group (P < 0.05). Plasma Zn concentrations were increased by Zn supplementation and were higher (P < 0.01) for the treatment groups supplemented with 15, 40 and 100 mg Zn/kg DM than for the control and 5 mg/kg Zn groups (P < 0.01). Faecal Zn content in Groups D and E was higher than that in Group A (P < 0.01). The content of albumin in plasma from Group E was greater than in the control and Groups B, C and D (P < 0.05). The concentrations of testosterone in plasma from Groups C, D and E were decreased (P < 0.05) compared with the control. The days between antler initiation and harvesting of deer in Groups D and E were decreased (P < 0.05). Average daily gain of fresh antler and dry antler of deer in Groups D and E was significantly higher than that in the control group (P < 0.05). In conclusion, a control diet containing 58.6 mg Zn/kg was inadequate for achieving optimal productivity for sika deer. The recommended Zn supplementation is from 76.7 to 99.0 mg/kg for 2-year-old male sika deer.

scholarly journals Energy and Protein Requirements for the Maintenance of Growing Male Sika Deer (Cervus nippon)

2021 ◽  
Vol 8 ◽  
Author(s):  
Kun Bao ◽  
Xiaoxu Wang ◽  
Kaiying Wang ◽  
Guangyu Li ◽  
Hanlu Liu
Keyword(s):  
Feed Intake ◽  
Sika Deer ◽  
Latin Square ◽  
Cervus Nippon ◽  
Nutrient Digestibility ◽  
Metabolic Energy ◽  
Net Energy ◽  
Regression Equations ◽  
Protein Requirements ◽  
Intake Level

The objective of this study is to study the effects of dietary intake levels on energy metabolism, carbon (C), and nitrogen (N) balance and to determine the maintenance requirements of energy and protein for male sika deer during their growing period. A total of 16 1-year-old male sika deer with similar body weight (BW) (63.25 ± 2.42 kg) were selected, with four animals per feed intake level. The feeding levels of the four groups for deer were 40, 60, 80, and 100% of the recommended amount, respectively. The nutrient digestibility and methane production were measured through digestion trials and respiratory trials. A 4 × 4 Latin Square design was performed in a respirometry trial. The results show that the apparent digestibility of C and N gradually increased as the level of feed intake decreased. Furthermore, with a decrease in feed intake level, the metabolic energy intake (MEI), heat production (HP), and retained energy (RE) of male sika deer significantly decreased (P &lt; 0.01). The requirements of metabolic energy for maintenance (MEm) and net energy for maintenance (NEm) of growing deer are 251.17 and 223.62 kJ kg−1BW0.75d−1, respectively, as estimated according to the logarithmic regression equations between HP and MEI. The net N requirement for maintenance (NNm) and net protein requirement for maintenance (NPm) of growing male sika deer based on the linear relationship between retained nitrogen (RN) and daily nitrogen intake (NI) were 251.8 mg kg−1BW0.75d−1 and 1.57 g kg−1BW0.75d−1, respectively. The NEm and NPm values obtained from this experiment fill the gap in net energy and protein requirements and serve as basic data for establishing the nutritional standards forsika deer breeding in China.

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