Influence of Prepartum Feed Intake of Performance of Cows Fed Ad Libitum During Lactation

Effect of somatotropin on thyroid hormones and cytokines in lactating dairy cows during ad libitum and restricted feed intake.

Twelve Holsteins in first lactation were used to investigate the relationship between energy balance and effects of bovine somatotropin (bST) on thyroid hormone metabolism and cytokine concentrations in serum. Six cows were fed for ad libitum intake and six cows were feed restricted to induce negative energy balance during two treatment periods of 6 d. During treatment periods, cows were admini...

Feed intake of sheep when allowed ad libitum access to feed in methane respiration chambers.

The patterns of feed intake when animals are allowed ad libitum access to feed in a respiration chamber is not known, nor are the potential effects of the artificial environment of chambers on voluntary feed intake. The objectives of the study were to describe the pattern of hourly feed intake of sheep when fed for ad libitum intake in respiration chambers and determine the repeatability of thi...

Performance and individual feed intake characteristics of group-housed sows fed a nonstarch polysaccharides diet ad libitum during gestation over three parities.

The objective of this experiment was to study the effects of feeding group-housed gestating sows a diet with a high level of fermentable nonstarch polysaccharides (NSP; approximately 45% sugar beet pulp as fed) ad libitum on the development in individual feed intake characteristics and reproductive performance during three successive reproduction cycles. Performance of the ad libitum-fed sows w...

Influence of Energy Intake During Lactation on Subsequent Gestation, Lactation and Postweaning Performance of Sows

Relationships between feeding behaviour and feed intake in dairy cows during early lactation

VII CHAPTER 1: Introduction 1 CHAPTER 2: Background 3 2.1 Feed intake in transition period 5 2.2 Regulation of feed intake 7 2.3 Feeding behaviour 14 2.4 Measuring of feeding behaviour 16 2.5 Physiological changes and metabolic disorders during transition period and early lactation 22 2.6 Sensor-based monitoring of feeding behaviour and feed intake as well as metabolic-related production diseas...