Effect of Gossypol on the Rumen Microbial Degradation of Whole Cotton Seed and Grass Hay Incubated in Consecutive Batch Cultures | Chapter 6 | Research Perspectives of Microbiology and Biotechnology Vol. 6

It is well known that cottonseed is widely used as a feed supplement for ruminant animals. However, anti-nutrient gossypol in the seed of cottonseed may cause adverse effects on microbial degradation of the feed. An experiment was conducted to investigate the effects of gossypol on the rumen microbial degradation of whole cottonseed (WCS) and grass hay (GH) with and/or without antinutrient gossypol in a consecutive batch culture (CBC) system. The results obtained from this experiment suggest that the presence of gossypol (1 mM) inhibits dry matter (DM) degradation, gas production from grass hay (GH), and growth of rumen microorganisms in consecutive batch cultures. There was a change in the molar proportion of volatile fatty acids (VFA) when WCS was used as a substrate, suggesting the fermentation of WCS has altered the composition and the activity of the rumen microbial population. However, GH with 1 mM gossypol was still more degradable by mixed rumen microorganisms than WCS, and there was evidence that the microorganism might adapt to the presence of gossypol when GH was the substrate, but not when WCS was used.

 

 

Author (s) Details

Ismartoyo
Department of Animal Science, The University of Hasanuddin, Makassar, 90245, Indonesia.

 

Please see the book here:- https://doi.org/10.9734/bpi/rpmab/v6/2214

Assessment of the Changes in Hormones of Somatotropic Axis during Transition Period in Murrah Buffaloes (Bubalus bubalis) Supplemented with Vitamin E | Chapter 3 | Research Aspects in Agriculture and Veterinary Sciences Vol. 1

 The researchers wanted to explore how vitamin E administration altered the GH-insulin–IGF-1 axis in Murrah buffaloes throughout the transition period. The Murrah buffaloes (n = 12) were selected during late gestation from the National Dairy Research Institute (NDRI) cattle herd and put into two groups of six each. The control diet was fed to group I buffaloes, while group II buffaloes were given 2000 IU/day/head vitamin E along with the control feed. By jugular veinpuncture, blood samples were taken from each buffalo at weekly intervals from day -21 to day +21 relative to parturition. A bovine specific ELISA test kit was used to measure growth hormone (GH), IGF-1, and insulin. According to the data, there was no significant difference in insulin and GH concentrations in the blood during the transition phase between the two groups. In Group I, however, the fall in insulin and IGF-I was substantially greater. The decrease in these hormone levels during the transition period was discovered to be a physiological event associated to a negative energy balance. During the changeover period, dietary supplementation with Vitamin E had no influence on peripheral hormone levels.

Author (s) Details

Bhabesh Mili
Dairy Cattle Physiology Division, National Dairy Research Institute, Karnal, Haryana, India.

Sujata Pandita
Dairy Cattle Physiology Division, National Dairy Research Institute, Karnal, Haryana, India.

B. S. Bharath Kumar
Dairy Cattle Physiology Division, National Dairy Research Institute, Karnal, Haryana, India.

Mehtab S. Parmar
Physiology and Climatology Division, Indian Veterinary Research Institute, Izatnagar, India.

View Book :- https://stm.bookpi.org/RAAVS-V1/article/view/2417