Nutrient digestibility and changes in feeding behavior of cattle fed cottonseed and vitamin E

Abstract

High lipid concentration in ruminant diets often harms nutrient digestibility and feed intake; thus, a protected lipid and antioxidant source can be considered as an alternative for improving diet energy without putting animal production at a disadvantage. The aim of this study was to evaluate the dry matter intake (DMI), nutrient digestibility and feeding behavior of cattle fed cottonseed and vitamin E. Six cannulated cows, non-pregnant, non-lactating were distributed in a replicated 3 × 3 Latin Square design. Feed was offered ad libitum twice daily. Treatments were: 1) Control, 2) CS: 30 % cottonseed included; and 3) CSVitE: 30 % cottonseed plus 500 IU VitE included. Data were analyzed by SAS (Statistical Analysis System, v.9.3) and the significance was declared at p < 0.05. Diets with cottonseed had 22 % greater digestibility of ether extract and 9 % lower digestibility of non-fiber-carbohydrates compared to the control. Treatments with cottonseed had 13 % higher time eating, 48 % more ruminating, 34 % more chewing and 17 % lower time idling compared to the control. Molar proportion of propionate was 36 % higher and the butyrate and acetate:propionate ratio were 27 % and 30 % lower, respectively, for the cottonseed treatments compared to the control. Including cottonseed up to 30 % can be used to increase diet energy density leading to improvements in feeding behavior and ruminal parameters. The inclusion of Vitamin E did not result in benefits to cattle when it was combined with cottonseed. Further studies should be undertaken to evaluate vitamin E levels in association with different amounts and lipid sources.

Effect of Linseed Oil Beads Addition With Vitamin E on Performance, Blood Metabolites and Milk Yield of Lactating Goats

“…An increased tendency of rumen pH is recorded (p=0.05) with LO addition compared to CON values whereas VE inclusion did not change pH values compared to those fed on LO. Numerically higher ruminal pH on feeding LO was in agreement with previous studies using different lipid sources including fish oil in diets of sheep (Wachira et al, 2000), in diet of cows (Shingfield et al, 2003) and both of these studies attributed this increase to associated decreases in DMI and also in diets of cattle fed cottonseed alone or combined with vitamin E (Nogueira et al, 2019) and they explained higher pH to higher NDF content of cottonseed. On the other hand, Gawad et al (2015) recorded lower ruminal pH values in vitro with different levels of linseed oil beads but they suggested that the mean of pH values remained within normal range of pH which is between (6 and 6.7).…”

Impact of high-fat diet consumption during prolonged period of pregnancy on placenta structures and umbilical vascular growth in goats

“…Decreased DM intake can be expected when dietary fat concentration exceeds 6% (Martin et al, 2010). However, Nogueira et al (2019) added 8% fat concentration to cow feed and did not observe any difference in DMI between treatments. According to Joy et al (2021), increasing the lipid content of the diet of beef heifers improves palatability and feed efficiency and increases the energy density of the diet.…”

Ruminal fermentation and degradation, kinetic flow of digesta and milk fatty acid composition of cows fed sugarcane silage-based diets supplemented with whole cottonseed

“…According to NRC ( 2001), feeding polyunsaturated oils as part of a whole-oilseed diet has minimal effects on fermentation, probably because the oil is released slowly from the seed to ruminal fluid. This phenomenon occurs with the WCS, where the polyunsaturated FAs are protected inside the seed, requiring greater effort of rumination and mastication for its release (Nogueira, Perna, Pereira, & Rodrigues, 2019), providing small amounts of lipids in the ruminal environment, which may result in rapid BH, avoiding unsaturated FA accumulation and impairment of the ruminal degradation of the fiber. Moreover, the amount will not be enough to adhere to feed particles, causing physical impediment to microorganisms and microbial enzymes (Bettero et al, 2013).…”