Effect of Lint on Whole Cottonseed Passage and Digestibility and Diet Choice on Intake of Whole Cottonseed by Holstein Cows

Abstract

Effects of rolling whole linted cottonseed and whole acid-delinted cottonseed on whole seed passage and digestibility were determined using 24 lactating Holstein cows. Whole seed passage averaged .74% in all cows fed whole linted seed during the standardization period and .45% in 6 cows fed whole linted seed during a comparison period, contrasted to 11.3% in 6 cows fed acid-delinted seed. Digestibility of ether extract was less in the 6 cows fed whole acid-delinted cottonseed. No advantage was for rolling whole linted cottonseed before feeding, but rolling was beneficial for whole acid-delinted cottonseed. Individual consumption of whole linted cottonseed by 18 nonpregnant, dry Holstein cows varied from .04 to 5.05 kg/day when two-choice options were given for cottonseed versus chopped coastal bermudagrass hay or corn silage, or a complete ration of 75% corn silage and 25% concentrate. No indication of gossypol toxicity was seen, but the large variation in each choice situation suggests it is desirable to blend cottonseed with other ingredients to ensure more uniform consumption.

The effect of heating and NaOH treatments on the nutritive value of nonlinted whole cottonseeds

“…The nonlinted WCS used in the present study is less digested in the rumen than linted WCS (Coppock et al, 1985). Its lower digestibility may be related to its rapid sedimentation in the rumen.…”

“…Whereas high linted dietary WCS is well digested by ruminants, digestibility of delinted cottonseed is lower. In lactating dairy cows, about 11 % of consumed whole acid-delinted seeds are excreted in the faeces (Coppock et al, 1985). Similar proportions of naturally nonlinted WCS of the Pima variety have been found in the faeces of lactating dairy cows (Sullivan et al, 1993).…”

Metabolisable Energy, In situ Rumen Degradation and In vitro Fermentation Characteristics of Linted Cottonseed Hulls, Delinted Cottonseed Hulls and Cottonseed Linter Residue

“…However, a negative interaction was noted when a combination of cottonseed hulls and cotton long linter were fed to ruminants (Coppock et al, 1985; Sullivan et al, 1993). Palmquist (1995) observed that addition of cottonseed long fibre decreased fibre digestibility because it increased the pool size of undigested fibre in the rumen.…”

Advances in gossypol toxicity and processing effects of whole cottonseed in dairy cows feeding

“…From their literature review, Arieli (1998) concluded that DM intake of dairy cattle is not altered when WCS is included at up to 25% of the diet. However, in some studies performed under hot weather conditions (Coppock et al, 1985a;Lanham et al, 1992), a decline in DM intake occurred with WCS feeding. This decline could be explained by the higher fiber content of the WCS diets in these experiments.…”

“…Most of the protein and fat of CS is contained within the meats, and most of the NDF is contained within the hull and the lint. Others (Coppock et al, 1985a;Sullivan et al, 1993a;Zinn, 1995;NRC, 2001;Prieto et al, 2003;McCaughey et al, 2005) reported that linted CS contained less CP and fat, and more NDF Table 1 Chemical composition of linted Upland and cracked Pima CS (Santos et al, 2002) Upland CS Cracked Pima CS …”